Global Patent Index - EP 2221464 A1

EP 2221464 A1 20100825 - Control unit for internal combustion engine

Title (en)

Control unit for internal combustion engine

Title (de)

Steuerungseinheit für Verbrennungsmotor

Title (fr)

Unité de contrôle pour moteur à combustion interne

Publication

EP 2221464 A1 20100825 (EN)

Application

EP 10153591 A 20100215

Priority

JP 2009035485 A 20090218

Abstract (en)

An internal combustion engine (10) includes an EGR system (40). The EGR system (40) is formed of an EGR passage (41) for introducing exhaust gas from an exhaust passage (30) into an intake passage (20) and an EGR valve (42) that is able to vary the flow passage area of exhaust gas in the exhaust passage (30). An electronic control unit (60) estimates whether liquid-phase water is adherent to the EGR valve (42) on the basis of an engine operating state. When the electronic control unit (60) estimates that liquid-phase water is adherent to the EGR valve (42), the electronic control unit (60) forcibly opens and closes the EGR valve (42) to reduce the amount of water adherent to the EGR valve (42) at the time of stop of engine operation.

IPC 8 full level

F02D 21/08 (2006.01); F02D 41/00 (2006.01); F02M 25/07 (2006.01)

CPC (source: EP)

F02D 21/08 (2013.01); F02D 41/0077 (2013.01); F02M 26/50 (2016.02); F02B 2075/125 (2013.01); F02D 41/042 (2013.01); F02D 2011/108 (2013.01); F02M 26/54 (2016.02); F02M 26/73 (2016.02); Y02T 10/12 (2013.01); Y02T 10/40 (2013.01)

Citation (applicant)

JP 2002227727 A 20020814 - TOYOTA MOTOR CORP

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

EP 2221464 A1 20100825; EP 2221464 B1 20111228; AT E539249 T1 20120115; JP 2010190122 A 20100902; JP 4730448 B2 20110720

DOCDB simple family (application)

EP 10153591 A 20100215; AT 10153591 T 20100215; JP 2009035485 A 20090218